Pornpawee Chyenjairuang และ Duangduan Rattanamongkolgul. (2004) The study of the effectiveness of problem-based learning mode development in the elderly of nursing. <i>Journal of Medicine and Health Sciences</i>, <i>11</i>(3), 33-48.Pornpawee Chyenjairuang และ Duangduan Rattanamongkolgul. "The study of the effectiveness of problem-based learning mode development in the elderly of nursing". Journal of Medicine and Health Sciences 11 (2004):33-48.Pornpawee Chyenjairuang และ Duangduan Rattanamongkolgul. The study of the effectiveness of problem-based learning mode development in the elderly of nursing. Faculty of Medicine,Srinakharinwirot University:ม.ป.ท. 2004.